Question about 2005 Chevrolet Uplander

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Rearbrake caliper How do you get the piston to collapse to reinstall?

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Some pistons have to be turned and pushed at same time like a regular bolt, they have like thread inside, just go to autozone and ask for the loan tool program and get a tool to do it they have it there and then they will reimburse your deposit after you done with it

Posted on Jun 17, 2008

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If the caliper has a solid face with a nothch or notches in it the you will need to use a "lisle adjuster' (Costs about $13.00, I got mine at O'Reilly's) that looks liks a cube with different protrusions on each side of the cube. Also, each side has a square hole for a 3/8" drive socket.
rearbrake caliper - bbcbce6.gif On my 2005 Uplander, I had to put the caliper back on the mounting braket to collapse the piston, and then take it off again to put in the new brake pads. NOTE: this will not work unless you remove the rotor first.

Posted on Jul 20, 2008


MY brake gets pushed out everytime I but the new one in. i pull the cabiler apart and set them where they go but when i puch it down the circle like thing pushes it out

Posted on Jul 12, 2008

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1 Answer

Rear brake cailpers won't collapse on 2007 ford fusion

Open bleeder valve & push caliper piston, in as
you rotate piston to screw in parking brake

Do this by hand,only use a clamp on the front calipers

Apr 08, 2013 | 2008 Ford Fusion


Cheap and easy way to collapse a caliper

When replacing disc brake pads it is always nescesary to collapse the caliper again as the piston that presses the pads against the rotor is protruding too far for the (thicker) new pads to fit. Using screwdrivers and such can damage the caliper, so there are several tools available for purchase. I just figured I'd make my own.
Refer to the diagram
Use a piece of flat bar(B), more or less 1 by 4 inches and about 3/8 inch thick. Find a bolt and nut(A) that fit to each other, let's say at least half inch thick and about 2 inches long. Drill a hole in the flat bar, big enough for the bolt to fit through, weld the nut over the hole and you're good to go.
When collapsing the caliper(5), assemble the newly made tool(just screw the bolt(3) into the nut) place the flat bar(2) against the piston(1), use an old pad(4) and fit it into the caliper (this is something for the bolt to push against), and uncrew the bolt until the piston has been pressed back into the caliper.


on Oct 18, 2010 | Isuzu Trooper Cars & Trucks

2 Answers

Removed 2 mounting bolts from caliper. Caliper will move somewhat, but cannot completely remove from mount. Is there a third bolt I'm not seeing?

No, but if there is a ridge on the outer edge of the rotor, you may need to collapse the caliper piston a bit to slide it off the rotor. You can sometimes do this by pulling on the outside edge of the caliper and rotating it toward the axle end. Or, if you can get a screwdriver in between the inner pad and the rotor (do not pry on the piston), you may be able to pry the piston in that way. I often pry it all the way back using this technique--it saves the step of collapsing the piston with a c-clamp to get the new pads to open far enough to reinstall. Please let me know if you have more questions, and thanks for using FixYa.

Apr 03, 2011 | Jeep Compass Cars & Trucks

1 Answer

In replacing front brake pads, do I first loosen or remove the two bolts that hold the caliper itself, should I have brake fluid resv cap off? Robert

You'll want to remove the two bolts that hold on the caliper. Remove the caliper and brake pads. You'll need to collapse the caliper piston back into the caliper to get the caliper on with the new brake pads. You can use a C-clamp, or a caliper piston tool to push it back in. I would remove the reservoir cap when you collapse the piston into the caliper.

Nov 01, 2010 | 1997 Saturn SL

1 Answer

How to replace front brake pads

You'll need a few Metric wrenches and a large C-clamp or brake caliper piston tool to collapse the piston back into the cylinder. Unbolt the caliper, remove the old pads, install the new pads. Lubricate the areas where the caliper and pads go. Push the caliper piston back into the caliper and reinstall the caliper and tire. Make sure you pump up the brakes before you drive, to get the new pads seated.

Jun 01, 2010 | 1996 GMC Sierra

1 Answer

How do i change front brake pad on this car merecy sable 1989 -99

Remove the wheel, remove the 2 bolts holding on the caliper to the caliper carrier. You will need a large C-Clamp or a cailper piston tool. Place an old brake pad against the piston in the caliper and use the C-Clamp to push the brake pad against the piston to collapses the piston into the caliper. Also open the master cylinder cap and place a towel around the area to catch any brake fluid that would come out of the master cylinder as you collapes the piston, this is normal, but doesn't always happen, depending on the level of fluid in the master cylinder. Install the new pads and reinstall the caliper and wheel. Make sure you pump the brake pedal a few times before you take off, to get the pads against the rotor.

Mar 16, 2010 | 1999 Mercury Sable

1 Answer

How to collapse the master cylinder on the rear brakes?

The rear brakes are collapsed by using a c-clamp or a caliper tool designed just for doing that. keep the pad on the side that the piston is on, then use a c-clamp or just pressure to collapse the piston. I've found that if working properly, most calipers can be pressed back into their seat by hand. The tool just makes it even easier. Be sure to loosen the Master cyl cap to allow air to escape & if it's too full, remove some fluid as when you collapse the piston, the fluid will return to there and overflow if there is too much.

If the piston appears to be stuck, inspect to be sure it is not cocked sideways a hair, they must be straight when going back in or they will wedge.

If it is sideways, carefully press on the brakes to cause it to move in the direction of applying the brakes again, it is best to put a block in between the remaining brake pad and the outer caliper to prevent the caliper from overextending, you only want to free it up. You can also try twisting a hair as you push in on them and try to seat them but usually on that type caliper it's straight back and done.

You can loosen the bleeder valve while returning the pistons to their seat & eliminate the old fluid from returning to the master cylinder but you have to be sure not to allow air to enter the system or you'll need to bleed the system later.

good luck.

Feb 15, 2010 | 2007 Volkswagen Jetta 2.5 Sedan

2 Answers

How to collapse rear calipers on mini cooper

Did you notice the brake fluid level in the master cylinder before you tried to collapse the calipers? You should see a rise in level as you collapse them (however far they did collapse). If you're not seeing any change in the level (it should fill up) you might have a plugged valve between the caliper and the master cylinder. Loosen the brake fluid line to the caliper and try collapsing it again. If still no go, start dismantling the caliper and look for bent, broken, stuck or mal-adjusted pieces.

Feb 07, 2010 | 2005 Mini Cooper

2 Answers

Cant get rear caliper piston to collapse 06

The rear calipers on that model rotate in, it requires a special tool.

If you pushed too hard directly in, there is a chance that you may have damaged the caliper.

Jul 27, 2009 | 2006 Ford Mustang

1 Answer


ase mechanic:

those calipers in the rear have slots on the piston right. that means you have to turn the pistons in clockwise. sometimes a pair of needle nose pliers put in the slots and turn will work, otherwise there is a rear caliper brake tool to turn those pistons in.

Jan 29, 2009 | 1996 Pontiac Grand Prix

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